Focus Foodservice - Universal Caster Set, mounting plate: heavy-duty, 4" (10.2 cm), square, multiple bolt holes, stainless steel, wheels: (4) 5" (12.7 cm), with brakes, grease resistant, non-marking, 300 lb. (227 kg) capacity per caster, polyurethane, temperature range 14° to 212° F (-10° to 100°C), NSF (set of 4) (mounting hardware not included)